From acb25b35102dfca08f66e155560f6c99cb8fa841 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 23 Jun 2004 23:17:30 +0000
Subject: main part of the native protocol

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@31 fefdeb5f-60dc-0310-8127-8f9354f1896f
---
 src/sample.c | 94 ++++--------------------------------------------------------
 1 file changed, 5 insertions(+), 89 deletions(-)

(limited to 'src/sample.c')

diff --git a/src/sample.c b/src/sample.c
index c270f255..2454630c 100644
--- a/src/sample.c
+++ b/src/sample.c
@@ -1,50 +1,8 @@
-#include <string.h>
 #include <assert.h>
 
 #include "sample.h"
 
-struct sample_spec default_sample_spec = {
-    .format = SAMPLE_S16NE,
-    .rate = 44100,
-    .channels = 2
-};
-
-struct memblock *silence_memblock(struct memblock* b, struct sample_spec *spec) {
-    assert(b && b->data && spec);
-    memblock_assert_exclusive(b);
-    silence_memory(b->data, b->length, spec);
-    return b;
-}
-
-void silence_memchunk(struct memchunk *c, struct sample_spec *spec) {
-    assert(c && c->memblock && c->memblock->data && spec && c->length);
-    memblock_assert_exclusive(c->memblock);
-    silence_memory(c->memblock->data+c->index, c->length, spec);
-}
-
-void silence_memory(void *p, size_t length, struct sample_spec *spec) {
-    char c = 0;
-    assert(p && length && spec);
-
-    switch (spec->format) {
-        case SAMPLE_U8:
-            c = 127;
-            break;
-        case SAMPLE_S16LE:
-        case SAMPLE_S16BE:
-        case SAMPLE_FLOAT32:
-            c = 0;
-            break;
-        case SAMPLE_ALAW:
-        case SAMPLE_ULAW:
-            c = 80;
-            break;
-    }
-                
-    memset(p, c, length);
-}
-
-size_t sample_size(struct sample_spec *spec) {
+size_t pa_sample_size(struct pa_sample_spec *spec) {
     assert(spec);
     size_t b = 1;
 
@@ -66,56 +24,14 @@ size_t sample_size(struct sample_spec *spec) {
     return b * spec->channels;
 }
 
-size_t bytes_per_second(struct sample_spec *spec) {
+size_t pa_bytes_per_second(struct pa_sample_spec *spec) {
     assert(spec);
-    return spec->rate*sample_size(spec);
+    return spec->rate*pa_sample_size(spec);
 }
 
-size_t mix_chunks(struct mix_info channels[], unsigned nchannels, void *data, size_t length, struct sample_spec *spec, uint8_t volume) {
-    unsigned c, d;
-    assert(channels && data && length && spec);
-    assert(spec->format == SAMPLE_S16NE);
-
-    for (d = 0;; d += sizeof(int16_t)) {
-        int32_t sum = 0;
-
-        if (d >= length)
-            return d;
-        
-        for (c = 0; c < nchannels; c++) {
-            int32_t v;
-            uint8_t volume = channels[c].volume;
-            
-            if (d >= channels[c].chunk.length)
-                return d;
-
-            if (volume == 0)
-                v = 0;
-            else {
-                v = *((int16_t*) (channels[c].chunk.memblock->data + channels[c].chunk.index + d));
-
-                if (volume != 0xFF)
-                    v = v*volume/0xFF;
-            }
-
-            sum += v;
-        }
-
-        if (volume == 0)
-            sum = 0;
-        else if (volume != 0xFF)
-            sum = sum*volume/0xFF;
-        
-        if (sum < -0x8000) sum = -0x8000;
-        if (sum > 0x7FFF) sum = 0x7FFF;
-        
-        *((int16_t*) data) = sum;
-        data += sizeof(int16_t);
-    }
-}
 
-uint32_t samples_usec(size_t length, struct sample_spec *spec) {
+uint32_t pa_samples_usec(size_t length, struct pa_sample_spec *spec) {
     assert(spec);
 
-    return (uint32_t) (((double) length /sample_size(spec))/spec->rate*1000000);
+    return (uint32_t) (((double) length /pa_sample_size(spec))/spec->rate*1000000);
 }
-- 
cgit